Use of a prefix hash tree (PHT) to locate services within a peer-to-peer communication network

摘要

The network (NET) has a distributed hash table (DHT) organized such that localization information e.g. internet protocol address, are associated to keys, where the keys correspond to leaves of binary tree e.g. prefix hash tree. Node labels i.e. binary word, are distributed in the table. A searching unit searches the information in the leaves, whose label is a prefix of identifier (ID) of service (R) contained in a service request. The units transmit the information to a network element (T) e.g. communication terminal. The labels have parameters defining a universal resource identifier. Independent claims are also included for the following: (1) a method for permitting a communication equipment to access a service from a distributed hash table (2) a computer program for implementing a service access method (3) a computer medium containing the program.